51361086 has 32 divisors (see below), whose sum is σ = 118333440. Its totient is φ = 14557536.

The previous prime is 51361043. The next prime is 51361087. The reversal of 51361086 is 68016315.

It is a super-2 number, since 2×51361086² = 5275922310198792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51361087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520 + ... + 10148.

It is an arithmetic number, because the mean of its divisors is an integer number (3697920).

Almost surely, 2^51361086 is an apocalyptic number.

51361086 is an abundant number, since it is smaller than the sum of its proper divisors (66972354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51361086 is a wasteful number, since it uses less digits than its factorization.

51361086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9768.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 51361086 is about 7166.6649147285. The cubic root of 51361086 is about 371.7161234657.

The spelling of 51361086 in words is "fifty-one million, three hundred sixty-one thousand, eighty-six".